A reflex arc differs from other responses to stimuli in that ____________________
a. it occurs without processing within the brain
b. no neurons are required to bring about the response
c. it involves a lot of integration and signal generation in the brain
d. motor neurons are typically not activated
A
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The cell primarily responsible for secreting the matrix of bone.
What will be an ideal response?
Which chloroplast structure increases the amount of surface area that is available for photosynthesis?
A) stroma B) chlorophyll C) envelope D) thylakoid
A molecule that closely resembles the shape of a substrate for an enzyme and that decreases the activity of the enzyme would most likely serve as a(n)
A. noncompetitive inhibitor. B. allosteric inhibitor. C. allosteric activator. D. competitive inhibitor.
Classification. Match the following descriptions to the most appropriate function, process, or trait listed below.
A. The transmission of DNA from parent to offspring B. Process by which individuals produce offspring C. A process found only in plants, some bacteria, and some protists D. E. A characteristic most organisms exhibit that tends to keep their internal environment within a range that favors survival